Setting up a 'kill zone'(cross-fire) is more than an awareness.
It implies more than awareness, it implies premeditation .
The existance of an ariel camera reinforces the concept of premeditation , and planning , not just a happenstance situation.
The delay and reluctance in releasing information even more furthers the inuendo that there is something that it actively being hidden.
Seeing as the ballistics reports came back with vague ‘small and medium’ sized bullets, let us just say ALL OF THEM.